Calvin and Hobbes by Bill Watterson for February 29, 1988
Rosalyn: I'll get it. I think it's for me. Hello? ...Hi, Charlie, thanks for calling. ...Yeah, this little freak's driving me up the wall. ...What? No, I... Calvin: Cahrlie, this is Calvin on the other phone! Listen to me! Your girlfriend's a sadistic kid-hater! Don't ever marry her! She'd be a terrible mother! She, uh-oh, gotta go! After Charlie dumps you, he'll thank me!